S.Korea says AstraZeneca, Pfizer COVID-19 vaccines 87% effective after first shot

Data by the Korea Disease Control and Prevention Agency (KDCA) showed the Pfizer vaccine, jointly developed by BioNTech , was 89.7% effective in preventing infection at least two weeks after a first dose was given, while the AstraZeneca shot was 86.0% effective.

from International-News-Economic Times https://ift.tt/3b2dwyx
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